It is a very preliminary version. It has only been tested on very simple
examples where it worked. On bigger networks, imported from Hugin files, it was very very very slow.
So, you can use this software as a toy. Much more work is needed to validate
and optimize it.

A named graph is a graph where the vertices have a name.
This name is not a vertex value. Putting this name in the vertex value
would make algorithm less readable.
A vertex name is only useful to display the graph.
Labeled graph has a different meaning in graph theory.